In order to enable your 7100 for the full 100 users you will need to purchase P/N 1100ALR10001SMB which is the Remote system upgrade for NetVanta 7100, VSMB (Very Small Business) units to activate support up to 100 users Mon-Fri 8am-5pm site time. Does not include configuration for new users. The NetVanta 7100 being upgraded must have been bought as a standalone 4200796G1#VSMB. The upgrade has to be performed by an ADTRAN Engineer and will require remote access to the system. The list price for this upgrade is $1,695.